Liquid-treating apparatus



may w ,-19% msmz afs. TANNER LIQUI TRETING APPARTUS l Filed May 4.' 19232 Staats-Sheet 1 ll! i! i. B. TANNR LIQUID TREATING APPARI'US Filed May4. 1923 .2 Shouts-Sheet .2

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Patented May i3, 1924.

INOS IBQ'IANNER, 0F CHICAGO, ILLINOIS, ASSIG-NOR TO JOSEPH E. NELSON 8aSONS, CHICAGO, ILLINO'IS, A COPARTNERSHIP COMPOSED OF JOHN E. NELSONANI) WILLIAM H. NELSON.

LIQUID-TREATING APPARATUS.

Application filed May 4,

To all whom t may concern.'

.Be it known that I, INos B. TANNER, citizen of the United States.,yresiding at Chicago, in the county of Cook and State of Illinois, haveinvented a certain new and useful Improvement in Liquid-TreatingApparatus, of which the following is a full, clear, concise, and exactdescription'.

My invention relates to liquid treating apparatus and in its preferredembodiment is an improvement upon the liquid treating apparatusdisclosed in my United States Patent 1,407,499, dated February 21, 1922.rIhe apparatus of that patent included a settling chamber, a chemicaltank, a source of liquid under pressure, a pipe through which the liquidpasses into the settling chamber for treatment, a chemical pipe alsodischarging into the settling chamber and having a port in its sidethrough which chemical passes from the chemical tank into the pipe, avalve within the liquid .pipe and controlling ports in said pipe andrising and falling according to the pressure of the liquid, andmechanism governed by said valve and governing the height of thechemical pipe, whereby the varying volumes of water and chemical will hein fixed proportion to secure the required reaction between the chemicaland the materials that are to be precipitated out of the liquid. Watermay readily be softened by means of such an equipment having thecharacteristics of the invention. The mechanism controlled by the valvewithin the liquid pipe included an intermediately pivoted leverconnected at one end with the valve and at its other end with thechemical pipe.

In accordance with my present invention I employ a rack bar upon thevalve that controls the admission of the liquid to be treated, andmotion transmitting gearing between the chemical valve and rack bar.This gearing preferably includes a segmental gear in mesh with the rackbar, a bell crank lever carrying said segmental gear and also .carryinga valve incontrolling relation to the port through which the chemical isdischarged. This chemical valve is thus moved in proportion to themovement of the liquid valve, so that the liquid and chemical are alwaysin fixed proportion irrespective of the rate at which the liquid is1923. Serial No. 636,7M.

supplied for treatment. This mechanism is not only an improvement uponthe apparatus disclosed in my aforesaid patent but is of such a naturethat more than one chemical discharge valve may be controlled by asingle valve in the liquid pipe so that a plurality of differingchemicals may be admitted to the liquid where such are required to treatthe liquid.

I will explain my invention more fully in connection with theaccompanying drawingsin which Fig. 1 is a view, mainly in sectional"elevation, illustrating the pre-` ferred `embodiment of the invention;Fig. 2 is a vertical sectional view on line 2-2 of Fig. 4; Fig. 3 is avertical sectional view on line 3 3 of Fig. 4; Fig. 4 is a view inelevation, partially in section, of the chemical tank structure; andFig. 5 is a plan view of the structure shown in F ig, 4 with partsbroken away.

yLike parts are indicated by similar characters ofreference throughoutthe different figures. f

The tank l is of suitable formation and .is provided with a centralsettling chamber 2, which may be in the form of a stand pipe. Thischamber has no communication with the tank spacey surrounding it, exceptat the bottom, in accordance with well known practice.`

The water to be treated is supplied from the city mains or from anyother suitable source and flows through the riser 3 that may passupwardly through the settling :chamber 2 to the place where the rawwater is to be discharged into such chamber. This chamber is providedwith a continuation in the form of a funnel 4 at the upper end of thechamber. As will be more fully hereinafter set forth, ,the water passingfrom the pipe 3 into the settling chamber 2 controls the iow of chemicalfrom thechemical tanks 5, 5 into the funnel 4 so that the chemical willflow in quantities proportional to the amount of raw water dischargedinto said funnel. The mixture of water and chemical is initiated in thefunnel and is promoted by theupright perforated interleaved bai?A fleplates 6, 7 carried by the horizontal imperforate passage walls 8, 9 andthe horizontal perforated baffle plates 10, il. The

baille plates form a part of the subject matter ot' my copendingapplication Serial No. 487,121, filed July 23, 1921.

The chemicals are supplied to the chemical tanks from separate chemicalsupply tanks of which one 12 is shown. The piping` and lother equipmentpertaining to each chemical tank are like that pertaining to the other.The chemical supply tank 12 shown discharges into its chemical tankthrough the supply pipe 13, thesupply tank receiving unemployed chemicalback from the chemical tank through the return pipe 14. The chemicaltank 5 alsohas a supply pipe 13 and a return pipe 14 pertaining to itsown supply tank. not shown. Each supply pipe 13, 13 is desirablycontinued nearly to the bottom of its corresponding chemical tank 5 or 5and is` there provided with a horizontal outlet slot opening 132 throughwhich the chemical is distributed in sheets initially in a horizontaldirection. Each chemical tank has a flaring side, as indicated at 1.33in Fig. 2, so that the sheet of chemical coming into the tank is given areverse motion, the inlet end of the pipe being at the side of thechemical tank opposite the flaring 133. The levels of the chemical inthe chemical tanks are defined by the position of the upper ends of thepipes 14, 14 and are maintained at these levels as long as thecorresponding pumps (pump 15 for tank 5 being only shown) are inoperation, such pumps serving to maintain the flow of chemical into thecorresponding chemical tanks in suicient volume to be in excess of thatrequired so that the level of the chemical in the corresponding chemicaltanks 5, 5 is maintained constant.

rlhe upper end of pipe 3 is provided with weir ports 16 that areelongated lengthwise. of the pipe. A weighted valve 17YA has a range ofmovement extending through the zone of said ports and slightly on"either side thereof, the valve functioning' to completely close saidpipe and to fully open said ports or partially` open the samepdependingupon the head or pressure of the water flowing upwardly in said pipe.Valve 17 has an upwardly extending stem 18. This stem is formed with asmany upright racks 19, 19 as there are chemical tanks 5, 5, each rackbeing individual to a tank. Segmenta-l gears 20, 20 are respectively inmesh with said racks and are carried upon ends oiE bell crank levers 21,21 stationarily pivoted at 22, 22. The otheil ends of these bell crankscarry valves 23, 23 in controlling relation to ports 24, 24 in thechemical tanks. The pressure exerted by the weighted valve 1T upon thewater in thepipe 3 counteracts the pressure of this water upon the valvesuiiiciently to enable the valve to control the position of the valves23, 23. The

ports through which the chemicals and water flow are so proportioned andinterrelated that the amount of water passing through the port-s 16 andthe amounts of chemicals iiowing through ports 24, 24 into the funnel 4are in fixed proportion, the volumes ot chemicals flowing through theports 24, 24 increasing or decreasing with any increase or decrease oi3the flow of water. The water and chemical, in varying volume 'but infixed proportion, are initially received in the 'funnel 4 'from whichthey are passed to the channel containing the battles 6 and 7 and fromthis channel through the perforated battles 10, 11 as hitherto fullydescribed.

A filter 25 may be disposed in the tank 1 in which the softened water isheld for use, this water being finally filtered before it is withdrawn.

lVhile two chemical tanks and attendant equipment are shown, it isobvious the number may be increased or reduced- Vilhile I have hereinshown and particularly described the preferred embodiment ot myinvention I do not wish to be limited to the precise details ofconstruction shown as changes may readily be made without departing fromthe spirit of my invention, but having thus described my invention Iclaim as new and desire to secure by Letters Patent the following 1.Liquid treating apparatus including a source of liquid furnishing liquidto be treated under pressure; a pipe communicat c ing with said source;a valve in said pipe operated by the liquid, the pipe having a portclosed by said valve and also opened to varying extents by the valveaccording to the pressure exerted upon the valve by the liquid; asettling chamber into which the liquid to be treated is dischargedthrough said port; a chemical tank; a chemical valve in controllingrelation to a port formed in the chemical tank which is positioned todischarge chemical into the settling chamber; a rack coupled with thefirst valve; and motion transmitting gearing between the rack and thesecond valve.

2. Liquid treating apparat-us including a source of liquid furnishingliquid to be treated under pressure; a pipe communicating with saidsource; a valve in said pipe operated by the liquid, the pipe having aport closed by said valve and also opened to varying extents by thevalve according to the pressure exerted upon the valve by the liquid; asettling chamber into which the liquid to be treated is dischargedthrough said port; a chemical tank; a chemical valve in controllingrelation to a port formed in the chemical tank which is positioned todischarge chemical into the settling chamber; an upright rack coupledwith the first valve; and motion transmit ting gearing between the rackand the second valve.

3. Liquid treating apparatus including a source of liquid furnishingliquid to be treated under pressure; a pipe communicating With saidsource; a valve in said pipe operated by the liquid, the pipe having aport closed by said valve and also opened to varying extents by thevalve according to the pressure exerted upon the valve by the liquid; asettling chamber into Which the liquid to be treated is dischargedthrough said port; a chemical tank; a chemical valve in controllingrelation to a port formed in the chemical tank which is positioned todischarge chemical into the settling chamber; a rack coupled with thefirst valve; a bell crank lever; a segmental gear upon one end of thelever and in mesh With said rack; and a valve upon the other end of saidlever and in controlling relation to the second valve.

4L. Liquid treating apparatus including a source of liquid furnishingliquid to be treated under pressure; a pipe communicating with saidsource; a valve in said pipe opera-ted by the liquid, the pipe having aport closed by said valve and also opened to varying extents by thevalve according to the pressure exerted upon the valve by the liquid; asettling chamber into Which the liquid to be treated is dischargedthrough said port; a chemical tank; a chemical valve in controllingrelation to a port formed in the chemical tank Which is positioned todischarge chemical into the settling chamber; an upright rack coupledwith the first valve; a bell crank lever; a segmental gear upon one endof the lever and in mesh with said rack; and a valve upon the other endof said lever and in controlling relation to the second valve.

In Witness whereof, I hereunto subscribe my name this 12th day of Marchmos B. TANNER.

